ARM: dts: rmobile: Synchronize DT headers with Linux 6.1.7

Synchronize R-Car device tree headers with Linux 6.1.7,
commit 21e996306a6afaae88295858de0ffb8955173a15 .

This is only a copyright and SPDX identifier update, no
functional change.

The following script has been used for the synchronization:

$ for i in $(cd include/dt-bindings/clock/ ; ls -1 r8a*) ; do cp /linux-2.6/include/dt-bindings/clock/$i include/dt-bindings/clock/ ; done
$ for i in $(cd include/dt-bindings/power/ ; ls -1 r8a*) ; do cp /linux-2.6/include/dt-bindings/power/$i include/dt-bindings/power/ ; done

Signed-off-by: Marek Vasut <marek.vasut+renesas@mailbox.org>
diff --git a/include/dt-bindings/power/r8a7794-sysc.h b/include/dt-bindings/power/r8a7794-sysc.h
index 862241c..4d6c708 100644
--- a/include/dt-bindings/power/r8a7794-sysc.h
+++ b/include/dt-bindings/power/r8a7794-sysc.h
@@ -1,9 +1,6 @@
+/* SPDX-License-Identifier: GPL-2.0-only */
 /*
  * Copyright (C) 2016 Glider bvba
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; version 2 of the License.
  */
 #ifndef __DT_BINDINGS_POWER_R8A7794_SYSC_H__
 #define __DT_BINDINGS_POWER_R8A7794_SYSC_H__